SRAH-01H1A0R Bel Fuse Inc, SRAH-01H1A0R Datasheet - Page 3

• Manufacturer Part Number: SRAH-01H1A0R
• Description: CONV DC/DC 1.2-3.3V 1A 4.5-32VIN
• Manufacturer: Bel Fuse Inc
• Series: xRAH-01H1A0r
• Type: Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr

Specifications of SRAH-01H1A0R

• Output: 1.2 ~ 3.3V
• Number Of Outputs: 1
• Power (watts): 3W
• Mounting Type: Surface Mount
• Voltage - Input: 4.5 ~ 32V
• Package / Case: 7-DIP SMD Module
• 1st Output: 1.2 ~ 3.3 VDC @ 1A
• Size / Dimension: 0.78" L x 0.70" W x 0.32" H (19.8mm x 17.8mm x 8.1mm)
• Power (watts) - Rated: 3.3W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 86%
• Approvals: cUL, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

General Specifications
Note: All specifications are typical at 20V input, full load at 25
Control Specifications
Output Trim Equations
output voltage of the converter (Vo) are shown below. The Trim Down resistor should be connected between the
Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the
resistors should be used for any given application.
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
Efficiency
Switching Frequency
Output Trim Range
MTBF
Dimensions (surface mount)
Dimensions (vertical)
Weight
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
NON-ISOLATED DC/DC CONVERTER
4.5 Vdc - 32 Vdc Input
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
Parameter
Note: Output voltage Vo=1.205 V
Millimeters (L × W × H)
Millimeters (L × W × H)
R
R
Parameter
TrimUp
TrimDown
Inches (L × W × H)
Inches (L × W × H)
=
V
=
adj
17
V
V
V
V
V
V
V
V
V
V
V
O
O
O
O
O
O
O
O
O
O
−
=3.3 V
=2.5 V
=1.8 V
=1.5 V
=1.2 V
=3.3 V
=2.5 V
=1.8 V
=1.5 V
=1.2 V
2 .
o
8
V
−
7 .
o
V
-0.3 V
2.8 V
Min
adj
1.2 Vdc - 3.3 Vdc/1 A Output
−
270 kHz
190 kHz
150 kHz
130 kHz
100 kHz
1.2 V
83%
80%
76%
73%
70%
Min
21
-
5 .
19.81 x 17.78 x 8.13
17.78 x 7.82 x 16.51
Typ
0.70 x 0.308 x 0.65
0.78 x 0.70 x 0.32
8,040,762 hours
-
-
290 kHz
220 kHz
170 kHz
150 kHz
120 kHz
5.1 g
86%
83%
79%
76%
73%
Typ
-
12 V
Max
1 V
°C
310 kHz
250 kHz
190 kHz
170 kHz
140 kHz
3.3 V
Max
unless otherwise stated.
-
-
-
-
-
-
Remote on/off pin open, unit on.
Module
Module
Vo=1.2 V when trim pin open.
Measured at Vin=20 V, full load.
Calculated Per Bell Core SR-332 (I
=0.8 A, Vin=20 V; T
GND
GND
Vout
Trim
Vout
Trim
Notes
Notes
Rtrimdown
Rtrimup
a
= 25 °C)
O